<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    

    <script>
        let key = 'name';
        let obj = {
            [key] : '张三'
        };

        // let key="name";
        //增加 name 属性  值为张三
        // obj.name = '张三';
        // obj[key] = '张三';

        console.log(obj);

    </script>
</body>
</html>